HET[0]
HET[1]
N2HET
HR 0
N2HET
HR 1
0
1
HR share 1/0
N2HET Functional Description
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SPNU563A–March 2018
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High-End Timer (N2HET) Module
23.2.5.5 HR Structures Sharing (Input)
The HR Share Control Register (HETHRSH) allows two HR structures to share the same pin for input
capture only. If these bits are set, the HR structures N and N+1 are connected to pin N. In this structure,
pin N+1 remains available for general-purpose input/output. See Figure 23-12.
Figure 23-12. Example of HR Structure Sharing for N2HET Pins 0/1
The following program gives an example how the HR share feature (HET[0] HR structure and HET[1] HR
structure shared) can be used for the PCNT instruction:
L00 PCNT { next=L01, type=rise2fall, pin=0 }
L01 PCNT { next=L00, type=fall2rise, pin=1 }
The HET[1] HR structure is also connected to the HET[0] pin. The L00_PCNT data field is able to capture
a high pulse and the L01_PCNT captures a low pulse on the same pin (N2HET [0] pin).
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